Education, says Hank Green, is impossible to optimize. Hank and his brother John are the creators of Crash Course, a YouTube educational channel, now being touted on Patreon. "We create free, high-quality educational videos used by teachers and learners of all kinds," says the Patreon description. "That's all we want to do. After 200,000,000 views, it turns out people like this." In this article Green writes about talking to rich people about the success of Crash Course. "They get really excited really fast," thinking they could scale it up and 'fix' education. But there's no one-size fits-all. "Different schools face different problems. There are no one-size-fits-all solutions. You can’t innovate your way into the kind of traditional cost-savings the internet brings." So instead "we keep doing what we’re good at…making great content about difficult subjects that help students and teachers." And giving them away for free.